Added: SSHTunnel files and tests for MiscCommon
Fixed: installation of the dds env file
Fixed: tests execution from the install directory
Modified: install topology.xsd into the share dir.
Fixed: code formatting.
Added: a custom build target - "format-code".
Fixed: code formatting
Added: skeletons of dds-commander and dds-agent
Added: a skeleton of the dds-user-defaults
Added: cmake files for the commander and the agent projects
Fixed: compiler errors in dds_sys_files.
Modified: do not use minRequired attribute in topology description.